| title | ISBN-13 | year of publication |
|---|---|---|
| Ancient Egypt Thematic Unit | 978-1-55734-292-8 | 1992 |
| Apples: Thematic Unit | 978-1-55734-266-9 | 1990 |
| Archaeology Thematic Unit | 978-1-55734-296-6 | 1994 |
| Butterflies Thematic Unit | 978-1-57690-372-8 | 1998 |
| Colonial America Thematic Unit | 978-1-55734-597-4 | 1995 |
| Ecology Thematic Unit | 978-1-55734-286-7 | 1991 |
| Explorers Thematic Unit | 978-1-55734-288-1 | 1999 |
| Focus On Artists | 978-1-55734-494-6 | 1994 |
| Food and Nutrition Thematic Unit | 978-1-57690-373-5 | 1999 |
| Oceans Thematic Unit | 978-1-55734-284-3 | 1990 |
| Our Environment Thematic Unit | 978-1-55734-272-0 | 1991 |
| Plants Thematic Unit | 978-1-55734-244-7 | 1995 |
| U.S. Constitution Thematic Unit | 978-1-55734-582-0 | 1994 |
Ellen.S · M.E · M S. · Mary E. · Mary Ellen